Knife-sharpener.



H B. BKTJER. KNIFE SHABPENER.

APPLICATION FILED APR. 1h l9]?- Patented Aug. 13, 1918.

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ment of the frame 13 is discontinued and z the further rotation of thecam lifts the frame l5 and causes an upward wiping movement of the stone26 along the end surface of the knife at a fixed and proper sharpeningangle thereto. While this sharpening movement of the stone is inprogress, the frame 13 stands still, and after the stone 26 is entirelylifted and the other stone is entirely depressed, further/rotation ofthe cam moves the frame 13 to the left, bringing the now lowered stone27 into like sharpening contact with the other side ofthe knife edge,whereupon the sidewise movement is stopped and the second stone is wipedalong the surface of the knife, likewise at a proper sharpening anglethereto, while the other stone out of contact with the knife edge isdepressed. At the end of this movement the cam comes .back to theposition shown in Fig. 2.

It will be observed that in the construction abovedescribed, the stonesare singly and alternately wiped along the opposite sides of the knife,at a fixed and predetermined sharpening angle thereto, by means of anoperating mechanismcomprising a 1. A knife sharpener comprising a 'sup-:

port, a frame reciprocable on the support, a

second frame reciprocable on the first frame,

stone supports pivotally mounted on one frame, means for rocking thestone supports on their pivots actuated by the other frame, and meansfor reciprocating both frames to 7 apply the stones alternately toopposite sides of the knife for sharpening; substantially as described.a p 7 2. A sharpener comprising a fixed. support, a shaft journaled inthe support,cammeans on the shaft, a pair of stones, and means forsupporting thestones actuated by the cam-means to apply the stonesalternately tothe opposite sides of the knife to sharpen the same;substantially as described- 3. A sharpener comprising a support, a

'campivoted on the support, a pluralityof yokes movable onthe supportand adapted to beactuat'edv by the cam, a pairof stones, and a pair'ofstone supports therefor movably mounted on one of the yokesandoperatively connected to the other yoke, whereby rotation of the cammoves the yokes toapply the stones alternately to opposite sides of theknife to be sharpened; substantially as described.

7 4;; A; sharpener. comprising a support,

frames on the support arranged for reciprocation in differentdirections, stone carriers and stones thereon adapted to be arranged onopposite sldes of the knife, operative connections between the framesand the stone carriers whereby the stones are applied alter- I framevertically reciprocable 011 the support operativelycoimected to thestone carriers,

and rotary means for reciprocating the frames in timed relation to applythe stones alternately to opposite sides of the knife for sharpening;substantially as described.

6. A sharpener comprising a support, a

' slide carried by the support, a second slide carried ,by the supportfor movement at right angles to the first slide, stone supports pivotedon one of the slides, stones on the supports, a member pivoted on one ofthe slides and engaging the stone supports, an operative connectionbetween said pivoted member and the slide other than the slide on whichsaid member is pivoted, and means for moving the slides, whereby thestones are alternately applied to opposite sides of the knife to sharpenthe same; substantially as described.

7 A sharpener comprising a support, a cam pivoted thereon having asingle continuous periphery, a plurality of stones, and operativeconnections between the stones and the cam including a member on thesupport moved by the cam and stone carriers movableon said member Whenthe member is moved on the support by the cam whereby upon rotation ofthe cam the stones are applied alternately to opposite sides of theknife; substantially as described.

8. A sharpener comprising a pair of stone supports, stones on thesupports adapted to be arranged on opposite sides of the knife, andmeans for actuating the stone supports to apply the stones alternatelyto opposite sides of the knifefor sharpening, such means 7 comprising aplurality of movable yokes operatively connected to the stone supportsand rotary means for moving the yokes in timed relation; substantiallyas described.

9. A sharpener comprising a support, a cam pivoted on the support, meansfor rotating the cam, a horizontal frame moved from side to side bythecam, a pair of stone supports pivoted to the frame, stones on thesupports, a lever pivoted to the frame and engaging both supports, and avertical frame moved up and down by said cam to rock the lever to causethe stones to have movement-s toward and away from the knife;substantially as described.

10. A sharpener comprising a. support, cam-means pivoted on the support,horizontally and vertically reciprocating frames on the support adaptedto be actuated by the cam means a pair of arms pivoted on one of theframes for rotation about converging floplcl at this patent may beobtained for tion of the cam-means causes the stones to be appliedalternately to opposite sides of the knife; substantially as described.

In testimony whereof I aflix my signature.

HENRY BARTHOLD BATJER.

five cents each, by addressing the Commissioner of Patents Washington.D. 0.

